Read the text from a file and sort according to numbers

Question

I have a text file, say:

cat 2    
dog 4  
bird 20  
animal 3

I want to read this file and sort like this (according to numbers):

cat 2  
animal 3  
dog 4              
bird 20

Code tried so far:

def txtsort(self, _, line):
words = [] 
    for word in WORD_RE.findall(line):
    words.append(word)
words_ini = words[0]
count_ini = np.array(words[1])
count_sort = np.sort(count_ini,axis = 0,kind='quikstart', order = None)

And what happened with that code? As posted it's broken, so if it doesn't work there should not be any surprise. — jonrsharpe, Dec 04 '16 at 23:31
Fix your code so that `words` contains the words you want to sort. — Robert Harvey, Dec 04 '16 at 23:31
I am trying to do this in mrjob. Is there any solution for this using mrjob — bharath, Dec 04 '16 at 23:40

score 2 · Answer 1 · answered Dec 04 '16 at 23:32

2

Suppose you have words in a list similar to:

words = [
    ('cat', 2),
    ('dog', 4),
    ('bird', 20),
    ('animal', 3)
]

result = sorted(words, key=lambda x: x[1])

answered Dec 04 '16 at 23:32

Jivan

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score -1 · Answer 2 · answered Dec 04 '16 at 23:31

-1

You don't need external libraries for this. Just split each line and add it to a list, casting the second element as a number. Then sort the list by that element.

with open('file.txt') as f:
    result = [(a,int(b)) for line in f for a,b in line.split()]

result.sort(key=lambda x: x[1])

answered Dec 04 '16 at 23:31

TigerhawkT3

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I would love to hear what's wrong with this answer to make it deserve a downvote. Then I can improve it. – TigerhawkT3 Dec 05 '16 at 10:36

Read the text from a file and sort according to numbers

2 Answers2